Valves and valve actuation – Reciprocating valve – Piston
Patent
1997-05-22
1998-08-25
Fox, John
Valves and valve actuation
Reciprocating valve
Piston
137560, F16K 324
Patent
active
057975906
ABSTRACT:
A piston valve for liquids provides potential isolation between an inlet-side and an outlet-side liquid. The piston valve is suitable, in particular, for controlling water-based paints in painting appliances which operate by electrostatic charging. At least one control electrode which is at the electric potential of the liquid present at the outlet of the valve is provided in order to improve the service life of the valve.
REFERENCES:
patent: 3955796 (1976-05-01), Grove
patent: 5201493 (1993-04-01), Kim
Borner Gunter
Sopka Jorg
ABB Research Ltd.
Fox John
Greenberg Laurence A.
Lerner Herbert L.
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